The Slime 20270 Presta to Schrader Valve Adapter is a set of two gold metal adapters designed for use in cycling. With a maximum working pressure of 12 bar, these adapters are compatible with both Presta and Schrader valves. Manufactured by Slime in the United States, these valve adapters come with a 1-month manufacturer warranty and weigh 0.02 lbs each. Perfect for cyclists looking to easily convert their Presta valves to Schrader valves for compatibility with various pumps and accessories.